Fireplace furnace



June 15, 1943. H. L. HARDEMAN FIRE-PLACE FURNACE 2 Sheets-Sheet 1 Filed Sept. 19, 1941 June 15, 1943. H, L. HARDEMAN 2,322,016

FIRE-PLACE FURNACE Filed Sept. 19, 1941 2 Sheets-Sheet 2 HARD/N L HARDEM/ N Patented June 15, 1943 hires stares aszaoic gram orrics 2 Claims.

This invention relates to a fire-place furnace which is especially constructed to provide a heating and ventilating system for houses, and other buildings.

One of the principal objects of this invention is the production of a simple and eficient fireplace furnace and associated features which will provide an efilcient heating as well as an efllcient ventilating system, whereby air may be drawn into the fire-place either from points near the ceiling or floor of a room to facilitate ventilation either in summer or winter.

A further object of thisinvention is the production of a simple and efiicient means for obtaining a maximum amount of heat from the fire-place through the medium of air ducts, and the like.

Other objects and advantages of the present invention will appear throughout the following specification and claims.

vIn the drawings:

Figure 1 is a vertical sectional view showing the arrangement of the fire-place and ventilating ducts;

Figure 2 is a horizontal sectional view taken on line 2-2 of Figure 1; A

Figure 3 is a sectional view taken on line 3-8 of Figure 2;

Figure 4 is a horizontal sectional view taken on line l-t of Figure l;

Figure 5 is a vertical sectional view through the upper end of the-heating unit;

Figure 6 is a vertical sectional view take line 6-6 of Figure 3.

By referring to the drawings, it will be seen that iii designates the building in which the heating and ventilating system is located having a wall M, in which wall H is built a fire-place 62. The fire-place is provided with an.ash-=pit i3 at the bottom thereof, and a clean-out open= ing M is provided in the rear of the ash-pit 68, as shown.

The door id of the combustion chamber of the fire-place i2 is provided with vent openings 55, and a ventilating duct '5 i communicates with the ash-pit it, as shown in Figure 1. The duct ll is provided with diverging portions iii which communicate with vertical ducts is located in the wall of a room or adjoining room opposite the fire-place i2. 'lfhe ducts I 9 are provided with bottom inlets 2d near the floor 2i and top inlets 22 near the ceiling of the room. Louvers 23 are located in each ofthe inlets 250 and '22 and may beopened and shut when so desired, so that warm air may be drawn into the inlets 22 near the ceiling in summer, and discharged out through the fire-place and chimney, or, cold air may be drawn in fromnear the floor through the inlets 29 in the winter, and discharged out through the fire-place and chimney.

A heating unit 24 is placed in the fire-place 22, as shown, and comprises a hollow casing which fits against the inner back wall and side walls of the heating chamber of the fire-place I2. The

heating unit 26 is provided with a screened air inlet 2d at its bottom rear end which extends through the exterior wall for admitting air from the outside of the building into the heating unit is. The unit 26 is provided with a cast iron front wall 26 and side walls 25 which constitute the lining of the combustion chamber of the fire-place.

The unit 2% is also provided with a vertical duct 26, and this duct 25 is provided with a forwardly extending radiator heat-discharge portion 2?. A plurality of such heat-discharge portions 27 may be provided without departing from the spirit of the invention. The outer end of the portion 2! is provided with a, heat-discharge opening 28, and suitable louvers 29 are. mounted also provided. A water pan 8% is preferably lo=-.

cated below the opening is and a damper 35 is located near the top of the combustion chamber of theiire=place Suitable hinged doors lit are also placed across the front of the combustion chamher.

A cradle, grate, andirons, and the like, may be mounted upon the door it within the combustion chamber oi the fire-place. When it is desired to clean out the fire-place the tan ill mounted within the duct ll .rnaybe turned ofi'and ashes maybe dropped through the apertures it; into the ash pit, and then removed through the clean out opening. Suitable fans may he located in the duct W, as well as in other locations within the ducts to, if desired, to facilitate forcing air through these ducts.

The intake vents Ed on the front face of the fire -place adjacent the hearth are to facilitate control of the circulation or air and to make this circulation as flexible as possible. To iacili= tate heating with extreme low temperature outdoore it might be desired to recirculate the air within the room by drawinglthe cool air from a point adjacent the floor through theiintake vents 2% rather than through the fresh air inlet d l which air inlet 23 may be closed at this time. During this operation the louvers 231 of the inlets 2d and 22 are closed to achieve the desiredrecirculation. Air then for combustion could be supplied through the clean-out opening it if desired. Suitable slide covers'may be used combined heating and ventilating system wherein a fire-place is utilized as one element of the system in conjunction with certain ducts for unit 24 out through the heat discharge portion- 21. Draft through the fire-place will also be facilitated through the medium of the ducts l1 and I9, assisted by the fan l1 which may be located in the duct [1, and suitable fans may if desired be mounted in other locations to facilitate ventilation, circulation and the like. The present device or system may be utilized to facilitate heating as well as cooling due to the mounting of the various ducts, and the associa-- tion of parts which will facilitate the changing of air within a building or room.

It should be understood that certain changes may be made in the system if desired, so long as such changes fall within the scope of the appended claims.

Having described the invention, what I claim as new is:

1. A heating and ventilating system comprising a fire-place having an outlet flue, a heating unit mounted within the fire-place, the heating unit having a fresh air inlet and a hot air outlet, the hot air outlet communicating with the interior of a building, the fire-place having a perforated floor, an ash-pit located below the perforated floor, an air duct communicating with the ash-pit, the perforated floor providing means for dumping ashes from the fire-place into the ash-pit and also providing a draft means upwardly through the fire-:place, vertical ducts communicating with the first mentioned duct, the vertical ducts having upper and lower inlet ports facing the fire-place and located within an opposite wall relative to the fire-place, means mounted within the upper and lower inlet ports to selectively open and close the ports, and a fan mounted within one of the ducts.

2. A heating and ventilating system comprising a fire-place having an outlet flue, a heating unit mounted within the fire-place, the heating unit having a fresh air inlet and a hot air outlet communicating with the interior of the room within which the fire-place is located, means for opening and closing the inlet and outlet to control the recirculation of air within the room and through the heating unit, a vertical duct mounted in a wall opposite.and facing the fire-place, the vertical duct having upper and lower inlets, means for selectively opening and closing the inlets of said vertical duct, said last mentioned inlets facing the fire-place, and means forming a communication between the vertical duct and the fire-place for facilitating the drawing of air through the last mentioned inlets and vertical duct and out through the fire-place.

HARDIN L. HARDEMAN. 

